Date: Thu, 5 Feb 2015 16:39:42 -0600 From: Bob Willcox <bob@immure.com> To: Valeri Galtsev <galtsev@kicp.uchicago.edu> Cc: freebsd-questions@freebsd.org Subject: Re: buildworld in 45 min! Message-ID: <20150205223942.GF90738@rancor.immure.com> In-Reply-To: <63016.128.135.70.2.1423175559.squirrel@cosmo.uchicago.edu> References: <201501081101.t08B1V2a010623@mech-as221.men.bris.ac.uk> <20150205215106.GE90738@rancor.immure.com> <63016.128.135.70.2.1423175559.squirrel@cosmo.uchicago.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, Feb 05, 2015 at 04:32:39PM -0600, Valeri Galtsev wrote: > > On Thu, February 5, 2015 3:51 pm, Bob Willcox wrote: > > On Thu, Jan 08, 2015 at 03:01:41AM -0800, Anton Shterenlikht wrote: > >> I got a Sun Fire X4100 for 60 pounds off ebay: > >> > >> FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 21:02:49 UTC 2014 > >> CPU: Dual-Core AMD Opteron(tm) Processor 2220 (2792.64-MHz K8-class CPU) > >> real memory = 17179869184 (16384 MB) > >> avail memory = 16595623936 (15826 MB) > >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs > >> FreeBSD/SMP: 2 package(s) x 2 core(s) > >> > >> It does buildworld -j8 in under 45 min. > >> That's really fast! > >> I'm used to 4 hour ia64 builds. > >> Time to move on perhaps... > >> > >> Anton > > > > Not trying to show anyone up (really), but you can just imagine how > > shocked I > > was when I first ran a buildworld on my current workstation system in 11 > > minutes! > > > > FreeBSD 10.1-STABLE #3 r277033: Sun Jan 11 17:07:24 CST 2015 > > CPU: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz (3300.07-MHz K8-class CPU) > > real memory = 34359738368 (32768 MB) > > avail memory = 33184337920 (31647 MB) > > FreeBSD/SMP: Multiprocessor System Detected: 12 CPUs > > FreeBSD/SMP: 1 package(s) x 6 core(s) x 2 SMT threads > > > > The latest run was 11:43 (looks like I'm losing a little ground). This is > > with -j12. > > I couple of times had notices incomplete build with -j16 (or whatever > those boxes allowed), ever since run buildworld as a single thread... > Maybe just me ;-) > > Valeri Hmm, I have had quite some success with parallel builds myself. However, I never bother to go beyond the number of logical CPUs in the system. When I did try that in the past it didn't seem to really speed things up all that much (if any). Bob > > > > > I can remember building 386bsd back in the early '90s on a 386 system and > > it taking > > just under 24 hours! :) > > > > > ++++++++++++++++++++++++++++++++++++++++ > Valeri Galtsev > Sr System Administrator > Department of Astronomy and Astrophysics > Kavli Institute for Cosmological Physics > University of Chicago > Phone: 773-702-4247 > ++++++++++++++++++++++++++++++++++++++++ -- Bob Willcox | You climb to reach the summit, but once bob@immure.com | there, discover that all roads lead down. Austin, TX | -- Stanislaw Lem, "The Cyberiad"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20150205223942.GF90738>